Yes, Washington Sailing Marina (Dangerfield Island).
The first is the 100-400 and the second is the 300. The settings in camera were the same and the post processing settings for one were applied to the other.
The two were shot a few minutes apart and the cloud cover was changing slowly but was still very similar.
My conclusion: some of today's best zoom's are on par with some primes.
@snowbear 's 70-200 looks great as does
@fishing4sanity 's 150-600 and the flexiblity they provide in a dynamic situation may outweigh any optical advantage in a prime....but I still have four primes.
Maybe
@SquarePeg will do a zoom/prime comparison with her new 70-300 and an overlapping prime?